Guard for chimney-thimbles



(No Moden.)-

J. T. GBNDRON. GUARD PoR GHIMNBY THIMBLES.

Tira- L 1n: News Pneus cu., mofoirruo., wA'smumcu, u. c.

UNITED STATES l PATENT' OFFICE..

JOSEPH T. GENDRON, OF WORCESTER, MASSACHUSETTS.

GUARD F'oR CHIMNEY-THIMBLES.

SPEGIFICATION forming' part Of Letters- Patent NO.478,422, dated July 5, 1892. Application filed January 22, 1892. Serial No. 418,959. (No model.)

the city and county of Worcester, and Statev of Massachusetts, have invented certain new and useful Improvements in Guards for Chim-l ney-Thimbles; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, forming a part of this specification, in which;

Figure l represents a front view of my improved guard fastened in position to the Wood frame around the usual chimney-thimble, ready for plastering.- Fig. 2 is a vert-ical section through the parts shown in Fig. l, said section also showing the plaster applied and the usual sheet-metal cap over said plaster around the stove-funnel. Fig. 3 is a detached perspective view of my aforesaid thimbleguard. Fig. 4. is an enlarged transverse sec- Y linder punched and turned out to'form ears b on opposite sides of the edge of the plate around its central opening,which, being a simtion through a portion of said guard, showing how the two parts thereof are fastened together, as will be hereinafter more fully described; and Fig. 5 shows a modification in the mode of fastening said two parts of the guard together, which will also be hereinafter described.

My invention consists of a thimble-guard comprising a plate of sheet metal having a series of small openings punched therethrough over its surface to form clinchers for the plaster and a sheet-metal cylinder or thimble of larger diameter than -the usual thimble fastened transversely in a central opening in said perforated plate, and the combination of said guard with` the chimney, the usualthimbl'e fastened therein, and the Woodwork and plastering about said thimble, as will be hereinafter more fully set forth.

ln order that others may better understand my invention, I will now proceed to describe it more in detail, with reference to the accompanying drawings.

Referring thereto, A represents part of a chimney; B, an ordinary-.thimble fastened therein; C, part of a stove-funnel fitted in said thimble; D, the usual Wood frame around the thimble; E,v the lath and plaster; F, a sheet-metal cap, such as is ordinarily ltted over the funnel against the face of the plastering to form a finish around said funnel, and G H my improved thimble-guard. The

plate G thereof may be made of any suitable sheet metal, and has holes punched therein Vover its surface in such a manner as to produce a group of flarlng spurs a on its face around each of said openings, which, in connection With the holes, produce effectual clinchers for holding the plaster when applied over the surface of said plate, as is indicated in Fig. 3, the plaster when spread over the surple, effectual, and ineXpensiveAmode of fastening, is preferable in practice, while in Fig. 5 l have shown a lateral flange or rim c around the plate-opening, by means of-which and rivets d the two parts may be fastened together.

4I do not-limit myself, however, to either construction, as other suitable means maybe employed to accomplish the same result.

VIn Afastening the two parts together the cylinder is preferably arranged to project outside of the plate a sufficient distance to bring its outer end on a line with the face of the plaster, and said cylinder is made of sufficient length in practice to extend back against the face of the chimney, as is indicated in Fig. 2, various lengthsibeing required for dierent places, according to the distance between the face of plaster and chimney. The diameter of the guard-cylinder is considerably greater than that of the usual thimble and stove-funnel, so as to leave quite a space c between them when the guard is fastened to the wood frame around the thimble, as is shown in Figs. l and 2. By thus keeping the guard and thimble entirely separate and providing a space between them, as aforesaid, it is obvious that a double purpose is served, viz: the chimney or woodwork and plastering may settle unequally Without one aecting the IOO other, thus preventing cracking of the chimney, and consequently avoiding the danger incidentthereto from fire, as Well as preventing the Wellknown unsightly appearance produced by the bulging of plaster around the thimble-opening, and, second, by thus providing an air-space around the thimble and stovefunnel with a sheet-metal partition between said space and the surrounding woodwork all danger from fire to said woodwork through the funnel and thimble is entirely obviated, as there is no open joint made in the guardcylinder throughout its length between the face of the plastering and chimney through which fire may communicate with the woodwork.

Although I prefer to use a perforated plate G, as described, in connection with the cylinder Il, wire lathin g or any other material suitable for holding the plaster maybe used in lieu thereof without departing from the principle of my invention.

I am aware that it is not broadly new to provide an air-space around the usual thimble or a sheet-metal partition between said thirnble and the surrounding woodwork, and therefore make 11o claim thereto, but limit my invention to the construction l have adopt-ed, whereby said guard and thimble may each-have independent vertical movements, as and for the purpose hereinbefore specified.

Having now fully described my invention, whatl claim therein as new, and desire to secure by Letters Patent, is-

l. A guard for chimney-thimbles, consisting of the face-piece Gr, adapted to be fastened to the woodwork around the usual thinible.- opening and to hold the plaster spread thereon, andthe cylinder or thiinble H, of larger diameter than said usual thimble and fastened transversely in a central opening in said face-piece, substantially as and for the purpose set forth.

` 2. A guard for chimhey-thimbles, consisting of the sheet-metal plate G, adapted to be fastened to the woodwork around the thimbleopening and having holes punched therethrough at various points over its surface, with the metal thus forced through projecting from its face in the form of flaring spurs to produce, in connection with said holes,

clinchers for holding the plaster to said face, and the cylinder or thimble H, made of greater diameter than the thimble and fastened transversely in a suitable central opening in said perforated plate, substantially as and for the purpose set forth.

3. The chimney, its usual thixnble, the woodwork around said thimble, and the lath and plaster, in combination with a sheet-metal guard adapted to be fastened to the woodwork around said thimble and consisting ot' the plate G, punched through at various points over its surface to produce openings therethrough as well as flaring spurs upon its face to hold the plaster, and the cylinder Il, made of greater diameter than the thimble and fastened transversely in a suitable centralopening in said perforated plate, substantially as and for the purpose set forth.

4. Thecombinationof the chimney,its usual thiinble, the woodwork around said thimble, the lath and plaster, the stove-funnel and its cap.J with a sheet-metal guard adapted to be fastened to the woodwork around said thimble and consisting of the plateG;1 punched through at various points over its, surface to produce openings therethrough as well flaring spurs upon its face to, hold the plaster, and the cylinder 1l,` made of greater diameter than the thimble and fastened transversely in a suitable central opening in said perfo,- rated plate, substantially as and for the purpose set forth.

JOSEPH T. GENDRON. hWitnesses:

A. A. Banken., W. B. Nounsn. 

